Kiln



K.4,HIMROD.

KILN. APPLICATION HLEp Aue.30, '19l6.

1,339,705, I Patented May 11,1920;

/4w z z s. I 1 WATS .r

. 2 1L 9 3 g i3 6 (2 WATER J 1 W STEQM WATER I Inventor ton,

' agent.

in is a speci STATES PATENT 1:;

max nnmon, or mon'rou, min-unso'm, nssrenon,

mn'ms, TO PAUL W.-IMZcKAY, zmus'rnn, or WATERFORD,

BY mi'm'c'r m MESNE Assisi:- rnnusynvmn.

KILN.

To all whom it may concern:

Be it known that I, KIRK HiMRoD, a citizen of the United States,residing at Iron county-of Crow Wing, and State of Minnesota, haveImprovement in Kilns, of which the-followfication;

y invention relates to kilns for drying and seasoning lumber or thelike, and my object is to produce a kiln wherein the material to beseasoned is subjected to the direct action of heat from a furnace orother source of combustion.

A further object is to provide means for preventing contact of theflames with the Specification of letters Patent.

invented a new and useful material without loss of heat due to excessivedistance between the source and the kiln.

Av further object is to provide means for humidifying the heating agentand for regulating the amount of moisture in the heating A furtherobject is to provide improved means for causing the heating agent totraverse the kiln.

A still further object is to produce a kiln ple and cheap ofconstruction and economical of use.

These and further objects will more fully appear in the followingspecification and accompanying drawings considered together orseparately.

I have illustrated one embodiment of my invention in the accompanyingdrawings, in which likeparts in all of the figures are designated bysimilar reference characters and in which:

Figure l is a diagrammatic sectional view of a kiln embodying myinvention:

Fig. 2 is a similar view of a modification; and

Fig. 3 is a detail section of still another modification.

In the drawings 1 designates of the usual kiln construction in which thelumber 2 to be seasoned is piled with spaces between the boards for thepassage of a heating agent as is customary. provided with inlet openingsand outlet openings 4- near the roof.

I provide a furnace 5 located in proximity to the kiln andthe furnacecommunicates with the kiln through the openings 3 means of a fine 6.liocated within the fire box of the furnace is a boiler 7 which in abuilding I The kiln is" 3 in its floor in Fig. 1

" enters the in' Fig. 3, I show main furnace and of csuperheating thesteam when desired.

' to the kiln to avoid 1916. Serial No. 117,584;

the embodiment of the invention. illustrated 1s a flash boilercomposedof a coil of P1136. The boiler is fed from a source of supplbymeans of a pipe 8 provided with a valve 9 and communicates with the flue6 by means of a nozzle 10, by means of which The steam issuing from thejet will smother the flames in the flue and the pressure in the boilerwill force the steam and products of combustion into'the kiln, throughthe piles Patented Ma 'ii, 1920.

a jet of steam is projected into the fluez of lumber in contact witheach individual board therein-and out of the openings 4.

Between the jet 1O andthe kiln 1,1 pro-.

vide a pipe flue 6 beyond the jet and may admit water, which-will, bythe heat from the furnace, be converted into saturated steam duringcertain periods of the seasoning process, or it'may admit steam when anadditionalsupply is required for quenching the fl'ame or for any otherpurpose.

The degree of heat admitted to the kiln may be; regulated by increasingor diminishing the pressure of the steam issuing from the jet 10, or bythe admission of water through the pipe 11 or both.

11 having a valve 12. This pipe In the modification shown in Fig. 2 I

show a furnace 13 provided with a sparkarrester 11' for preventingflames, sparks or burning embers from reaching the kiln. In thisembodiment of the'invention the steam for the jet 10 is transportedfroman in-v dependent source, such for example as the boiler of a sawmill.

In the embodiment of the invention shown an auxiliary furnace 15 Theauxiliary furnace in the flue between the 10 for the purpose for heatinga .coil 16. and coil are placed the jet The furnace is placed in closeproximity loss of heat by radiation, so that a very large percentage ofthe heat generated in the furnace will be utilized in the kiln. I

My improved kiln requiring no elaborate system .of piping, may beconstructed very cheaply, and is so simple in its operation that it maybe made a part of the equipment of the largest as well as the smallestsaw mill. Thelumbe may be seasoned directly after sawing a he heavytransportation char e on gree umber avoided.

' T- rnace may be fired with the waste products of the mill, such assawdust or slabs or both, orthe heat and steam for seasoning may betaken from the steam plant of the mill when such power'is employed. i 1

In accordance with the provisions of the Patent Statutes I havedescribed the principle of my invention, together with the apparatuswhich I now consider to represent the best embodiment thereof, but Idesire to have it understood that the apparatus shown is merelyillustrative, and that the invention may be carried out in other ways.

Having now described my invention what I claim and desire to secure byLetters Patent, is: v

1. The combination with a kiln, of a burner, and means for directing theprodin the presence of superheated steam andmeans for supplementing thesteam supply.

4. The combination with a kiln, of a burner, a steam jet fordirectingthe products of combustion from the burner'into the kiln,

and means for admitting water to the prodnets of combustion.

5. The combination with a kiln having inlet openings, a fluecommunicating with the openings, ofa burner communicating with the flueand in close proximity to the kiln,

means for generating steam, means for su-' Y perheating the steam, andmeans whereby combined steam and lVitnesses the superheated steam isemployed for diirecting the products of combustion from the the flue andin closeproximity to the kiln,

means for generating steam, means for superheating the steam, and meansfor/mixin the superheated steam with the products 0 combustion of theburner and dlrecting the products of combustion to the kiln.

7. The combination with a kiln having inlet openings, and a fluecommunicating with the openings, of a burner communicating withthe'flue' and in close proximity tothe kiln, and a steam jet fordirecting the prodnets of combustion from the burner to the kiln, saidsteam preventing flame fromreaching the kiln, and means for superheatingthe steam.

8. The combination with a kiln havingin- I let openings, a fluecommunicating with said openings, of a burner communicating with theflue and in close proximitv to the kiln, a conduit communicating withthe flue between the burner and thekiln whereby a -fluid may bedelivered to the flue, means for generating steannmeans .forsuperheating the steam, and means for mixing the superheated steam andfluid delivered by the conduit with the products of combustion of theburner and directing the combined steam,

fluid and products of combustion to the kiln. This specification signedand witnessed this twenty fourth day of August, 1916.

' 1 HIMRODH EDWARD R. SYvERsoN, I. W. SMITH.

